Wind speed measuring device used on wind machine

Abstract

The invention relates to a wind speed measuring device, in particular to a wind speed measuring device used on a wind machine. The wind speed measuring device comprises a blade, wherein wind speed measuring mechanisms are arranged on the blade; each wind speed measuring mechanism comprises insert pieces, lever mechanisms and force sensors; the insert pieces are connected with the blade through the lever mechanisms; the force sensors are connected with the lever mechanisms. The wind speed measuring device has the benefits as follows: the insert pieces can be enabled to align the direction of incoming wind and used for receiving resistance to the incoming wind; as the orders of magnitudes of moments of the insert pieces are smaller, choosing a proper moment measuring device is difficult, while the moments, produced by the wind resistance, on the insert pieces can be converted into force through the lever mechanisms, and the force sensors are used for measuring the size of the force, so as to calculate the moments on the insert pieces conveniently and measure a wind speed. Besides, the cost of the wind speed measuring device is lower.

Description

technical field [0001] The invention relates to a wind speed measuring device, in particular to a wind speed measuring device for a wind turbine. Background technique [0002] It is difficult to accurately measure the magnitude and direction of wind speed, but for wind turbine systems, accurate wind speed information is of great reference value for variable speed control, pitch control, and vibration reduction control of wind turbine systems. The wind has the characteristics of randomness and volatility, and the wind speed of the same measurement point on the wind turbine rotor surface at different time points is inconsistent. The diameter of modern wind turbines is large, and the effects of wind speed shear and tower shadow effect are obvious. At the same time, the wind speed of each point on the rotating surface of the wind rotor is not uniform. [0003] For systems with rotor structure characteristics such as wind turbines, the composite wind speed received by a certain ...

AI Technical Summary

Problems solved by technology

[0009] 1. Since the direction of the synthetic wind speed received by the blades of the wind turbine changes, the pitot tube needs to be aligned with the direction of the incoming wind to accurately test the wind speed. How to install this type of wind speed measuring device that needs to be aligned with the direction of the incoming wind on the wind turbine a tricky puzzle on the paddle

[0010] 2. The price and maintenance cost of hot wire anemometer, laser Doppler anemometer, ultrasonic anemometer and acoustic resonance anemometer are relatively high

Images